US10981624B2 - Hub apparatus and associated charging apparatus and systems - Google Patents

Hub apparatus and associated charging apparatus and systems Download PDF

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Publication number
US10981624B2
US10981624B2 US16/207,058 US201816207058A US10981624B2 US 10981624 B2 US10981624 B2 US 10981624B2 US 201816207058 A US201816207058 A US 201816207058A US 10981624 B2 US10981624 B2 US 10981624B2
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Prior art keywords
side cover
hub apparatus
coupled
shaft
charging
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US16/207,058
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US20190315241A1 (en
Inventor
Shih-Yuan Lin
Yu-Se LIU
Jun-Chieh Hung
Liang-Yi Hsu
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GOGORO Inc
Gogoro Inc Hong Kong
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Gogoro Inc Hong Kong
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Assigned to GOGORO INC. reassignment GOGORO INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LIU, YU-SE, HSU, LIANG-YI, HUNG, Jun-Chieh, LIN, SHIH-YUAN
Publication of US20190315241A1 publication Critical patent/US20190315241A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/02—Hubs adapted to be rotatably arranged on axle
    • B60B27/023—Hubs adapted to be rotatably arranged on axle specially adapted for bicycles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B1/00—Spoked wheels; Spokes thereof
    • B60B1/003—Spoked wheels; Spokes thereof specially adapted for bicycles
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B1/00—Spoked wheels; Spokes thereof
    • B60B1/02—Wheels with wire or other tension spokes
    • B60B1/04—Attaching spokes to rim or hub
    • B60B1/042—Attaching spokes to hub
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    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/02—Hubs adapted to be rotatably arranged on axle
    • B60B27/04—Hubs adapted to be rotatably arranged on axle housing driving means, e.g. sprockets
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    • B60L50/20—Electric propulsion with power supplied within the vehicle using propulsion power generated by humans or animals
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    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
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    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
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    • B62M6/50—Control or actuating devices therefor characterised by detectors or sensors, or arrangement thereof
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    • B62M6/60—Rider propelled cycles with auxiliary electric motor power-driven at axle parts
    • B62M6/65—Rider propelled cycles with auxiliary electric motor power-driven at axle parts with axle and driving shaft arranged coaxially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/80—Accessories, e.g. power sources; Arrangements thereof
    • B62M6/90—Batteries
    • H—ELECTRICITY
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    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H02K1/187—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to inner stators
    • H—ELECTRICITY
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    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2786—Outer rotors
    • H02K1/2787—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/2789—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
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    • H02K7/12—Structural association with clutches, brakes, gears, pulleys or mechanical starters with auxiliary limited movement of stators, rotors or core parts, e.g. rotors axially movable for the purpose of clutching or braking
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    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

Definitions

  • the present technology is directed to a hub apparatus (or a hub motor) and associated charging systems. More particularly, the present technology is directed to a hub apparatus configured to be charged via a wired charging system and/or a wireless charging system.
  • a charging process is important for electric vehicles.
  • Some conventional charging systems require users to charge their electric vehicles at designated charging stations. Sometimes it can be troublesome for users to locate available charging stations.
  • conventional charging systems can be interrupted when the connection between the electric vehicle and the charging station is accidentally “broken” (e.g., a power cord between the electric vehicle and the charging station becomes disconnected if a person accidentally trips on the power cord). Therefore, there is a need for improved systems and methods for charging electric vehicles.
  • FIG. 1 illustrate a hub apparatus in accordance with embodiments of the present technology.
  • FIGS. 2 a and 2 b are partially exploded views illustrating a hub apparatus in accordance with embodiments of the present technology.
  • FIG. 3 illustrate a hub apparatus and a side cover in accordance with embodiments of the present technology.
  • FIG. 4 is a partially isometric view of a side cover and related components in accordance with an embodiment of the present technology.
  • FIG. 5 is a partially isometric view of a side cover in accordance with embodiments of the present technology.
  • FIG. 6 is a side view of a mating portion (or a flange) extending outwardly from a base portion of a side cover in accordance with embodiments of the present technology.
  • the mating portion includes a number of electrical contact portions therein.
  • FIG. 7 is a partially isometric view of a connecting structure or clip in accordance with embodiments of the present technology.
  • FIG. 8 is a partially cross-sectional view of a side cover illustrating how a clip connects to a contact portion in the mating portion in accordance with embodiments of the present technology.
  • FIG. 9 is a partially cross-sectional view of contact portions and a side cover in accordance with embodiments of the present technology.
  • FIG. 10 is a partially isometric view of a charging head in accordance with embodiments of the present technology.
  • FIG. 11 is a partially isometric view of a vehicular frame supporting a hub apparatus and a charging head in accordance with embodiments of the present technology.
  • FIG. 12 is a partially isometric view of a charging stand in accordance with an embodiment of the present technology.
  • FIGS. 13 and 14 illustrate how a hub apparatus is coupled to a charging head and supported by the charging stand.
  • FIG. 15 illustrates how a charging head is incorporated into a charging stand in accordance with embodiments of the present technology.
  • FIGS. 16-18 illustrate embodiments of a wireless charging system in accordance with the present technology.
  • FIG. 19 illustrates a contact portion of a connector in accordance with embodiments of the present technology.
  • FIG. 20 illustrates a side cover of a hub motor with an electrical charging contact portions in accordance with another embodiment of the present technology.
  • FIG. 21 illustrates a charging head with contacting points to mate with the side cover shown in FIG. 20 in accordance with embodiments of the present technology.
  • the present technology is directed to a charging apparatus or system that can charge a hub apparatus (or a hub motor) via one or both of a wired and wireless connections.
  • the present technology is also directed to methods for managing a charging process for the hub apparatus.
  • the hub apparatus of the present technology is configured to rotate a wheel/rim of a vehicle (e.g., a bicycle, a tricycle, a scooter, a powered wheel chair, a cart, etc.).
  • the hub apparatus includes a rotor assembly, a shaft, and a stator assembly.
  • the stator assembly is fixedly coupled to the shaft, and the shaft extends through the rotor assembly.
  • the rotor assembly can be rotated relative to the stator assembly and the shaft.
  • the hub apparatus can be considered as an electric motor.
  • the rotor assembly of the hub apparatus is coupled to the wheel/rim of the vehicle, and the shaft is fixedly coupled to the vehicle (e.g., to a vehicular structure such as a frame).
  • the hub apparatus is configured to rotate the wheel either with or without human power to move (or at least facilitate the movement of) the vehicle.
  • the present wired/wireless charging systems for a hub apparatus can be implemented in one structure.
  • the wired/wireless charging systems can be implemented as a charging structure (e.g., having a charging stand and a charging head; e.g., FIG. 12 ).
  • the charging system includes (1) a charging stand; and (2) a charging head coupled to the charging stand.
  • the charging head is formed with an opening configured to receive a mating portion of a side cover of the hub apparatus.
  • a vehicular frame is fixedly coupled to a shaft of the hub apparatus.
  • the charging head is configured to fittingly positioned between the vehicular frame and the side cover of the hub apparatus such that the hub apparatus is capable of being charged by the charging head via one or both of wireless and wired connections.
  • Advantages of the present technology include, for example, (1) it provides a hub apparatus that can be charged with one or both of a wired and a wireless connections; (2) the hub apparatus can be securely attached to a charging stand during a charging process; (3) the present technology can effectively manage the charging process of the hub apparatus by selecting most effective way to charge the hub apparatus (e.g., based on the characteristics of a battery assembly in the hub apparatus, available power to support the charging process, etc.).
  • FIG. 1 is an isometric view of a hub apparatus or hub assembly 100 in accordance with embodiments of the present technology.
  • the hub apparatus 100 includes an outer housing (or housing) and a hub flange (or ring structure) 103 configured to accommodate multiple spokes 105 (e.g., the other end of the spoke 105 can be coupled to a front/back wheel of a bike).
  • the housing can be assembled from multiple housing components.
  • the housing can include a first housing component 101 and a second housing component 201 coupled to each other and together form an inner/interior/internal space to accommodate elements of the hub apparatus 100 .
  • the first housing component 101 can include a sidewall 101 a and an outer rim 101 b extending around the outer circumference of the sidewall 101 a .
  • the outer rim 101 b has a height that defines the interior space in the first housing component 101 .
  • the first housing component 101 is formed with a side opening in its center, allowing a shaft (e.g., shaft 209 in FIG. 2 a ) to pass through.
  • the opening is configured to accommodate a side cover 321 (see e.g., FIG. 3 ).
  • the side cover 321 is fixedly coupled to the shaft 209 and accordingly does not rotate with the housing.
  • a bearing can be positioned between the side cover 321 and the housing, which enables the housing to rotate relative to the side cover 321 (and the shaft 209 ).
  • an oil seal can be positioned between the housing and the side cover 321 .
  • the hub flange 103 or ring structure is coupled to, or integrally formed with, the sidewall 101 a .
  • the hub flange 103 extends outwardly from a surface of the sidewall 101 a at a position radially outward from a center point of the first housing component 101 .
  • a second housing component 201 e.g., a lid or cap; FIG. 2 a ) encloses the open end of the first housing component 101 with a structure that fits underneath the outer rim 101 b of the first housing component 101 .
  • the second housing component 201 can include an insertion flange 2011 formed thereon.
  • the insertion flange 2011 is configured to couple the second housing component 201 to the first housing component 101 (e.g., to be inserted into a gap, to be discussed below with reference to FIG. 2 b ).
  • a bearing or oil seal 214 ( FIG. 2 a ) can be positioned between the second housing component 201 and the shaft 209 .
  • the bearing 214 is configured to facilitate the relative rotation between the second housing component 201 and the shaft 209 .
  • a main circuit board 203 fitted into the interior space of the housing are a main circuit board 203 , a battery assembly 205 , and a coil assembly 207 that are fixedly directly or indirectly to an axle or shaft 209 passing through the center of the hub assembly 100 .
  • the first housing component 101 and a number of magnets 218 (not visible in FIG. 1 or 2 a ; see e.g., FIG. 2 b ) on the interior of the first housing component 101 together form a rotor assembly.
  • the main circuit board 203 , the battery assembly 205 , and the coil assembly 207 together can be considered as the stator assembly 208 .
  • an additional battery pack can be positioned external to the hub apparatus 100 as a backup, supplementary power supply.
  • the housing and a wheel attached to the housing via the spokes 105 are also rotated to move a scooter, a bicycle, or a vehicle.
  • the hub flange 103 or ring structure and the sidewall 101 a are concentrically positioned.
  • the hub flange 103 is positioned around a center point of the sidewall 101 a .
  • the hub flange 103 can be positioned at different radial locations of the sidewall 101 a (e.g., closer to the outer edge of the first housing component 101 or nearer to the center point).
  • the hub flange 103 includes a plurality of openings 107 configured to receive the ends of the multiple spokes 105 , respectively.
  • Each spoke 105 has an outer end configured to couple to a wheel/rim structure (not shown in FIG. 1 ) and an inner, flared (or spherical) end 109 that seats against a correspondingly shaped recess formed in an interior circumference of the hub flange 103 .
  • a spherical washer 108 is fitted over the spoke 105 and rests against the flared end of the spoke 105 .
  • Correspondingly shaped spherical recesses are formed in the hub flange 103 to receive the spherical washer 108 and seat the spoke 105 under tension.
  • the present structure (1) improves manufacturing flexibility (e.g., they are easy to fit and have a higher error tolerance) and (2) provides additional durability when operating the hub apparatus 100 at least because the spokes 105 are not rigidly secured to the hub flange 103 at their ends.
  • FIG. 2 a is an exploded view showing a hub apparatus 200 in accordance with embodiments of the present technology.
  • the hub apparatus 200 includes the first housing component 101 (which has the sidewall 101 a and the outer rim 101 b ) and the lid or cap or second housing component 201 .
  • the first housing component 101 includes the hub flange 103 configured to couple to a wheel/rim structure via multiple spokes.
  • the second housing component 201 includes multiple protrusions or stopping bumps 213 configured to stop the relative rotation (e.g., by cooperating with a locking device 700 or a motor locking device discussed below with reference to FIG. 7 ) between the first housing component 101 and the coil assembly 207 .
  • the multiple protrusions or stopping bumps 213 can be named as “engaging portions.”
  • the first housing component 101 and the second housing component 201 together form a housing assembly.
  • the engaging portion can be implemented as a recess (e.g., configured to receive the locking device 700 ), a hook (e.g., configured to engage the locking device 700 ), and other suitable components.
  • the engaging portions are located either on the interior surface of either the sidewall 101 a of the first housing component 101 , and/or on the interior surface of the second housing component 201 .
  • the engaging portion and the locking device 700 together form a “locking mechanism” or “locking system” for the hub apparatus 200 .
  • multiple magnets 218 are circumferentially positioned on the inner surface of the outer rim 101 b , and accordingly the first housing component 101 and the magnets 218 together act as a “rotor assembly” or a rotor in this embodiment.
  • the main circuit board 203 is configured to carry one or more controllers, controlling circuits, logic, sensors, wiring, and/or other suitable components necessary to apply current to the coils or to rotate the housing.
  • the main circuit board 203 can carry an electrical control unit (ECU) of a vehicle.
  • the main circuit board 203 can carry a power controller (not shown) configured to control the power output of the hub apparatus 200 .
  • the power output can be measured in form of the torque force of rotation between the rotor assembly (the housing with the magnets 218 positioned therein or on its inner surface) and the stator assembly 208 or by the watts expended by the motor.
  • the main circuit board 203 can carry drive circuitry configured to manage the power from the battery assembly 205 (e.g., to supply a three-phase alternating current).
  • the drive circuitry and the power controller can be integrated in one component (e.g., a motor control unit, MCU).
  • the battery assembly 205 can include multiple battery packs.
  • the battery assembly 205 includes three battery packs laterally positioned adjacent to the main circuit board 203 .
  • the battery assembly 205 can have different numbers of battery packs arranged in various ways.
  • the battery assembly 205 can include multiple battery packs positioned to form a polygon (e.g., a triangle, a rectangle, a pentagon, a hexagon, etc.) in a reference plane generally perpendicular to the shaft 209 (e.g., in such embodiments, the longitudinal direction of the battery packs lies in the reference plane).
  • the battery pack can be positioned at equal angles around the shaft 209 .
  • the battery packs can be arranged based on the size/shape of the battery packs so as to be fitted into the coil assembly 207 .
  • the battery packs can have orientations different from those shown in FIG. 2 a.
  • the battery assembly 205 can be controlled or managed by a battery management system (BMS).
  • BMS can include one or more sensors configured to monitor the status of a battery.
  • the BMS can be positioned on the main circuit board 203 .
  • the battery packs (and battery cells therein) can be connected in series or in parallel, depending on various needs or actual designs.
  • the battery assembly 205 can be coupled to one or more battery memories positioned on the main circuit board 203 and configured to store battery-related information (e.g., battery usage information, battery operating instructions (such as charging/discharging rates or other instructions that may vary from different batteries), battery firmware, battery status, etc.).
  • the battery memory can also be configured to store vehicle information (e.g., an operating temperature in the hub apparatus 200 ) or user information (e.g., driving/riding history, habits, etc.).
  • the battery memories can be positioned inside a battery housing of the battery assembly 205 .
  • the battery assembly 205 can be positioned inside the coil assembly 207 such that the hub apparatus 200 can have a compact design.
  • Benefits of positioning the battery assembly 205 inside the coil assembly 207 include, for example, (1) the coil assembly 207 can protect the battery assembly 205 , for example, from impacts from the outside; and (2) this arrangement can at least partially prevent or impede the battery assembly 205 from interference/influence of the magnetic field generated by the magnets of the rotor assembly.
  • the axle or shaft 209 is fixedly coupled to the main circuit board 203 , the battery assembly 205 , and the coil assembly 207 .
  • the shaft 209 can be coupled to a vehicular body (e.g., a frame, a chassis, structural parts, etc.) and support the same. During operation, the housing and the wheel attached thereto (via the spokes coupled to the hub flanges) can rotate relative to the shaft 209 to move the vehicular body.
  • the shaft 209 can be coupled to a front wheel component (e.g., a front wheel fork) or a rear wheel component (e.g., a rear wheel frame).
  • the hub apparatus 200 can include one or more waterproof components (e.g., O-rings) configured to make the hub apparatus 200 waterproof.
  • the waterproof component can be positioned at one or more locations such as a location adjacent to the shaft 209 , a location adjacent to a component (e.g., a torque sensor) of the hub apparatus 200 , etc.
  • the waterproof component can also be positioned between the first housing component 101 and the second housing component 201 , at one or both ends of the shaft 209 , between the side cover 321 and the first housing component 101 and the second housing component 201 , etc. so as to enhance the overall waterproof capability of the hub apparatus 200 .
  • FIG. 2 b illustrates how the stator assembly 208 is fitted within the first housing component 101 .
  • the stator assembly 208 is coupled to the shaft 209 and then the shaft 209 is positioned to pass through a center opening 216 of the first housing component 101 (in direct X, as indicated).
  • multiple permanent magnets 218 are positioned on the interior or inner surface of the first housing component 101 . During operation, the multiple permanent magnets 218 and the first housing component 101 can rotate (as a rotor assembly) relative to the stator assembly 208 .
  • the magnets 218 can be coupled to the first housing component 101 via a connecting structure (e.g., a metal ring). In some embodiments, the magnets 218 can be coupled to the sidewall 101 a of the first housing component 101 . In some embodiments, the magnets 218 can be coupled to the outer rim 101 b of the first housing component 101 .
  • a connecting structure e.g., a metal ring.
  • a gap 220 is formed between the magnets 218 and the first housing component 101 .
  • the gap 220 is configured to receive the insertion flange 2011 of the second housing component 201 ( FIG. 2 a ), such that the second housing component 201 and the first housing component 101 are fixedly coupled.
  • FIG. 3 is an isometric view of a side cover (or a side plug) 321 coupled to the hub apparatus 300 .
  • the side cover 321 is fixedly coupled to the shaft 209 (and therefore the side cover 321 is not rotating).
  • the side cover 321 is configured to protect the components inside a housing assembly 301 .
  • the side cover 321 can be used to carry a wireless communication/charging component 323 .
  • the wireless communication component 323 can include wireless inductive charging component (e.g., a radio frequency (RF)) component).
  • the wireless communication/charging component 323 can be used to charge a battery assembly (e.g., battery assembly 205 ) by communicating with an external wireless charger (which is further coupled to an external power source).
  • the side cover 321 can also carry components (e.g., contact portions 337 ) for a wired charging connection.
  • the wireless communication/charging component 323 carried by the side cover 321 does not rotate either. Therefore, the location of the wireless communication/charging component 323 (e.g., at the bottom of the side cover 321 ) remains unchanged. By this arrangement, the wireless communication/charging component 323 can be conveniently located or accessed for charging/communicating purposes.
  • the wireless communication/charging component 323 were to rotate with a wheel/housing, it would be relatively difficult for a user to align an external wireless charger with the wireless communication/charging component 323 , at least because it's hard to predict the location of the wireless communication/charging component 323 when it stops (e.g., it can be at the top, the sides, or the bottom of the wheel/housing). Therefore, the present arrangement provides a convenient, easy-to-use arrangement for the hub apparatus 300 to communicate with, or be charged by, an external charging device.
  • the side cover 321 provides a space that is independent from the internal space of the housing assembly 301 . Since the housing assembly 301 is configured to rotate, communication devices/components/modules, such as a Wi-Fi or Bluetooth module, may have interrupted communications in the internal space of the housing assembly 301 . In addition, since the housing assembly 301 is a load-bearing device/component, it can be made of a metallic material which may block or impede the communications of such communication modules. The independent space created by the side cover 321 allows a communication device/component/module to be installed therein and attached to or carried by a stationary or “non-rotating” component.
  • the side cover can be made of a material that does not substantially impede or interfere the wireless communication associated with the present system.
  • the side cover 321 can be made of plastic.
  • the housing assembly 301 can have an “intact” outer structure with sufficient structural rigidity (e.g., to bear the load of a vehicular frame or a vehicle).
  • FIG. 4 is an isometric view of the inside of the side cover 321 and related components in accordance with an embodiment of the present technology.
  • the side cover 321 is coupled to a secondary board 325 (e.g., a RF board, a printed circuit board, etc.) that is configured to carry a wire hub 401 .
  • the secondary board 325 is coupled to an inner surface of the side cover 321 .
  • the wire hub 401 is configured to electrically connect wires, connectors, or a wire bundle to the battery assembly 205 .
  • the side cover 321 can be formed with an inner gap 327 configured to enable wires or a wire bundle in a wire channel 329 to pass through.
  • the wire channel 329 is configured to accommodate and protect wires/connectors in the hub apparatus 300 (e.g., wires between the secondary board 325 and the main circuit board 203 , power/signal lines between components, etc.).
  • the wire channel 329 is configured to prevent the wires positioned therein from rotating with the wheel (e.g., the rotor assembly).
  • the wire channel 329 can be positioned inside the shaft 309 .
  • the side cover 321 includes first, second, and third terminal ends 331 a , 331 b and 331 c or wires.
  • the first and second terminal ends 331 a , 331 b are coupled to positive (+) and negative ( ⁇ ) terminals/nodes of the battery assembly 205 , respectively.
  • the third terminal end 331 c is also coupled to the battery assembly 205 and is configured to receive or transmit a signal for detecting/measuring the status (e.g., Status of Charge (SOC), Status of Health (SOH), etc.) of the battery assembly 205 .
  • the third terminal end 331 c can be coupled to other components of the hub apparatus 300 .
  • the terminal ends 331 a , 331 b and 331 c or wires shown in FIGS. 4-7 are elongated only for illustration purposes. In some embodiments, the lengths of the terminal ends 331 a , 331 b and 331 c or wires can be shorter than shown. In some embodiments, the terminal ends 331 a , 331 b and 331 c or wires can be positioned in the wire channel 329 .
  • FIG. 5 is an isometric view of the side cover 321 in accordance with embodiments of the present technology.
  • the side cover 321 includes a base portion (or disk portion) 333 and a mating portion (or circular portion/flange) 335 extending from the base portion 333 .
  • first, second, third, and fourth contact portions (or pin connectors/contacts) 337 a - d are positioned around a circumference of the mating portion 335 .
  • the first, second, and third contact portions or pin connectors 337 a - c are coupled to the terminal end 331 a - c , respectively.
  • a “contact portion” and a corresponding “terminal end” are collectively named as a “connector.”
  • the first connectors 331 a , 331 b can be charging connectors configured to charge the hub apparatus (e.g., element 100 , 200 or 300 ).
  • the second connector 331 c can be a signal connector.
  • the third connector 331 d can be a connector for facilitating the connection between the side cover 321 and a charging head (see, e.g., FIG. 10 or 11 ).
  • Each of the connectors includes a contact portion and a terminal end, as described above.
  • the first contact portion 337 a is configured to couple to a positive (+) terminal/node of a wired charger.
  • the second contact portion 337 b is configured to couple to a negative ( ⁇ ) terminal/node of the wired charger.
  • the third contact portion 337 c is configured to couple internal circuitry within the hub apparatus to an external device (e.g., a computer, a smartphone, a workstation, etc.) that can be used to control, maintain, or configure the hub apparatus 300 .
  • the third contact portion 337 c is also configured to couple to the external device.
  • the third contact portion 337 c is configured to receive signals from the external device for controlling a process associated with the hub apparatus (e.g., a charging process).
  • the signal can be a controlling signal from an external device (e.g., a smartphone, a portable device, etc.).
  • the signal can be used to control, maintain, or configure the hub apparatus.
  • the signal can be indicative of whether the other connectors are properly connected.
  • the third contact portion 337 c can receive signals to (1) control the charging speed based on the state of charge (SoC) of the battery assembly 205 and/or (2) cut off an electricity supply when the battery assembly 205 is fully charged or when the third contact portion 337 c is not properly connected.
  • SoC state of charge
  • the hub apparatus can be coupled to one or more external devices via a Wi-Fi and/or Bluetooth module positioned on the secondary board 325 .
  • the external device e.g., smartphone, mobile device, computer, workstation, etc.
  • the hub apparatus can be coupled to one or more external devices via a Wi-Fi and/or Bluetooth module positioned on the secondary board 325 .
  • the external device e.g., smartphone, mobile device, computer, workstation, etc.
  • the hub apparatus can be coupled to one or more external devices via a Wi-Fi and/or Bluetooth module positioned on the secondary board 325 .
  • the external device e.g., smartphone, mobile device, computer, workstation, etc.
  • the fourth contact portion 337 d is configured to facilitate connection between the side cover 321 and a charger (or a charging head).
  • the fourth contact portion 337 d can include a magnet that attracts a metal portion of the charger.
  • the fourth contact portion 337 d can include a metal portion that can be attracted by a magnet of the charger.
  • the contact portion 337 can include an elastic component/structure or a spring configured to facilitate the connection between the side cover 321 and the charger. Such embodiments are discussed below with reference to FIGS. 19-21 .
  • the first, second, third, and fourth contact portions 337 a - d are positioned on the flange 335 of the side cover 321 . In other embodiments, however, the first, second, third, and fourth contact portions 337 a - d can be arranged/positioned in various ways. For example, in some embodiments, the third contact portion 337 c can be positioned at a location between the first and second contact portions 337 a , 337 b.
  • FIG. 6 is a side view of the mating portion 335 extending outwardly from the side cover 321 in accordance with embodiments of the present technology.
  • the base portion 333 is formed with a curved or sloped surface. In other embodiments, the base portion 333 can be formed with a generally-flat surface.
  • FIG. 7 is an isometric view of a connecting structure 339 or clip (shown as 339 a and 339 b in FIG. 7 ) that makes an electrical connection between the contact portions 337 and the terminal ends 331 connected to the batteries in accordance with embodiments of the present technology.
  • each contact portion 337 is formed as a round post with a circumferential slot on one end with an end cap 3372 (shown as 3372 a and 3372 b in FIG. 7 ).
  • the clip or connecting structure 339 includes a semi-circular recess that shapes into the slot of the contact portion 337 to make an electrical connection between both parts.
  • the terminal ends 331 are soldered or otherwise secured in a hole at the other end of the connecting structure 339 .
  • the connecting structure 339 is configured to connect a corresponding one of the terminal ends 331 and a corresponding one of the contact portions 337 .
  • the first terminal end 331 a is coupled to an end of a first connecting structure 339 a .
  • a first pin opening 3391 a (or a first pin recess) is formed to accommodate a neck portion 3371 a of the first contact portion 337 a .
  • the first contact portion 337 a includes a cap portion 3372 a configured to be in contact with a (flat) surface of the first connecting structure 339 a , so as to prevent (or at least partially restrain) the first contact portion 337 a from moving in an axial direction (e.g., direction T 1 ).
  • the second terminal end 331 b is coupled to an end of a second connecting structure 339 b .
  • a second pin opening 3391 b is formed to accommodate a neck portion 3371 b of the second contact portion 337 b .
  • the second contact portion 337 b includes a cap portion 3372 b configured to be in contact with a (flat) surface of the second connecting structure 339 b , so as to prevent (or at least partially restrain) the second contact portion 337 b from moving in an axial direction (e.g., direction T 2 ).
  • the fourth contact portion 337 d is configured to facilitate connecting the side cover 321 to a charger.
  • the fourth contact portion 337 d can include a magnet that can attract a metal portion of the charger. Accordingly, the fourth contact portion 337 d is not coupled to any terminal end 331 .
  • the contact portions 337 can be formed in a substantially-the-same shape for the ease of manufacture or maintenance.
  • the contact portions 337 can be made of different conductive materials such that individual contact portions can have different characteristics or functions.
  • FIG. 8 is a cross-sectional view (e.g., Section A-A′ indicated in FIG. 6 ) of the side cover 321 in accordance with embodiments of the present technology.
  • a contact portion 337 e.g., the second contact portion 337 b
  • a terminal end 331 e.g., the second terminal end 331 b
  • a connecting structure 339 e.g., the second connecting structure 339 b
  • the contact portion 337 is positioned in a hole of the mating portion 335 (of the side cover 321 ).
  • An internal wall of the side cover 321 prevents the contact portion 337 from being pushed further inwards into the center of the side cover 321 .
  • the recess (e.g., pin recess 3391 in FIG. 7 ) in the connecting structure 339 snaps over the slot in the contact portion 337 such that the head part (e.g., cap portion 3372 ) of the contact portion 337 cannot be pulled through the connecting structure 339 . Therefore, the contact portion 337 is held in the hole in the side cover 321 .
  • the terminal end 331 is coupled to the connecting structure 339 and is in contact with an inner surface 3351 of the mating portion 335 .
  • Contacting the mating portion 335 provides structural support for the terminal end 331 and the connecting structure 339 , and accordingly the overall rigidity of the components increases.
  • the contact portion 337 is positioned on a side circumferential surface 3352 of the mating portion 335 of the side cover 321 .
  • the terminal end 331 is positioned on an opposite side surface (e.g., the inner surface 3351 ) of the mating portion 335 .
  • FIG. 9 is a cross-sectional view (e.g., Section B-B′ indicated in FIG. 6 ) of the contact portions 337 a - d and the side cover 321 in accordance with embodiments of the present technology.
  • the contact portions 337 a - d are positioned to be coupled to a charging head 901 .
  • the charging head 901 includes four contacting points 903 a - d configured to couple to a corresponding one of the contact portions 337 a - d so as to perform a predetermined function (e.g., supplying charging power, data transmission, electrically coupling two components, etc.).
  • a predetermined function e.g., supplying charging power, data transmission, electrically coupling two components, etc.
  • the first and second contact portions 337 a , 337 b are coupled to the contacting points 903 a , 903 b , respectively, such that a battery assembly (e.g., the battery assembly 205 ) inside the hub apparatus 300 can be charged.
  • the contacting point 903 d is coupled to the fourth contact portion 337 d by a magnetic force such that the charging head 901 can be operably attached to the side cover 321 .
  • the contacting point 903 c is coupled to the third contact portion 337 c for enabling the communication (e.g., by transmitting signals) between the hub apparatus 300 and an external device via the charging head 901 .
  • FIG. 10 is an isometric view of the charging head 901 in accordance with an embodiment of the present technology.
  • the charging head 901 is coupled to an external power source or an external device via a wire channel 904 (e.g., having a wire bundle positioned therein).
  • the wire channel 904 is configured to accommodate or protect wires coupled to the hub apparatus 300 (e.g., wires coupled to the contacting points 903 a - c and the contact portions 337 a - c ).
  • the charging head 901 is formed with a semi-circular opening 1509 corresponding to the shape of the side cover 321 .
  • the charging head 901 can include two oval-shaped openings 905 a , 905 b configured to enable the contact between the contact portions 337 a - d in the side cover 321 and the contacting points 903 a - d of the charging head 901 .
  • the first and second contact portions 337 a , 337 b (which are configured to receive charging power) are positioned in the same opening (e.g., opening 905 a ), whereas the rest of the contact portions 337 c , 337 d are positioned in the other opening (opening 905 b ).
  • such an arrangement can effectively prevent or reduce communication interference to data or signals transmitted via the charging head 901 during a charging process.
  • the charging head 901 is formed with two receiving openings 907 a , 907 b .
  • Each of the receiving openings 907 a , 907 b is configured to receive a connecting member such that the charging head 901 can be coupled to a charging stand (see e.g., FIG. 13 ).
  • FIG. 11 is an isometric view of a vehicular frame 1101 supporting the hub apparatus 300 and the charging head 901 in accordance with embodiments of the present technology.
  • the shaft 309 of the hub apparatus 300 is fixedly coupled to the vehicular frame 1101 .
  • the housing assembly 301 of the hub apparatus 300 is coupled to a wheel 1103 via the spokes 105 and the ring structure 103 .
  • the wheel 1103 can be rotated by the hub apparatus 300 to move the vehicular frame 1101 .
  • the charging head 901 can be coupled to the hub apparatus 300 and charge the same.
  • the charging head 901 can be coupled to the hub apparatus 300 by a magnetic force (e.g., generated between the contacting point 903 d and the fourth contact portion 337 d , as discussed above). As shown, the charging head 901 can be coupled to an external power source via a wire 1105 .
  • FIG. 12 is an isometric view of a charging stand 1201 in accordance with an embodiment of the present technology.
  • the charging stand 1201 is configured to support/position the charging head 901 and a hub apparatus (e.g., the hub apparatus 300 ) coupled to a vehicle structure (e.g., the vehicular frame 1101 ).
  • a hub apparatus e.g., the hub apparatus 300
  • vehicle structure e.g., the vehicular frame 1101
  • the charging stand 1201 supports the hub apparatus at a proper location.
  • the hub apparatus can be elevated by the charging stand 1201 and accordingly the wheel coupled to hub apparatus is not in contact with a ground surface.
  • the charging stand 1201 includes a base or foot portion 1203 , a tilted portion or neck portion 1205 , and a vertical portion or head portion 1207 extending from the neck portion 1205 .
  • the base 1203 is configured to position the charging stand 1201 on a floor or ground surface.
  • the base 1203 can include a material that provides sufficient friction between a bottom surface 1203 a (e.g., make the bottom surface 1203 a a “rough” surface) and a floor surface FS.
  • the titled portion 1205 is configured to couple the base 1203 to the vertical portion 1207 .
  • the charging stand 1201 includes a hollow arm 1209 configured to couple the vertical portion 1207 and the charging head 901 .
  • the hollow arm 1209 is also configured to accommodate one or more wires coupled to the charging head 901 .
  • the wires can be further positioned in a space inside the tilted portion 1205 and/or in a space inside the vertical portion 1207 .
  • the charging stand 1201 can include an angled support structure 1211 positioned to support the titled portion 1205 .
  • the angled support structure 1211 can be formed with a gap 1211 a configured to act as a shock absorbent or damper when the titled portion 1205 is moved relative to the base 1203 .
  • the gap 1211 a can be filled with elastic materials (e.g., forming a rubber bumper) to absorb shocks applied to the charging stand 1201 .
  • the gap 1211 a can be used as an outlet of the one or more wires positioned inside the neck portion 1205 .
  • the base 1203 can be formed with a slot 1213 configured to position or accommodate a wheel (see e.g., FIG. 14 ).
  • FIGS. 13 and 14 illustrate how the hub apparatus 300 is coupled to the charging head 901 and supported by the charging stand 1201 .
  • the side cover 321 of the hub apparatus 300 is aligned with the semi-circular opening 1509 formed by the charging head 901 .
  • the hub apparatus 300 can be moved downwardly (e.g., in direction D) and then the side cover 321 is positioned and fitted in the semi-circular opening 1509 .
  • the charging head 901 fits between the hub and a frame of a vehicle (e.g., the vehicular frame 1101 ), so that the vehicle does not fall out of the charging stand 1201 .
  • the charging head 901 and the hub apparatus 300 are coupled and then the hub apparatus 300 can be charged via the charging head 901 .
  • the wheel 1103 can be positioned in the slot 1213 to facilitate positioning the wheel 1103 at a proper location when the hub apparatus 300 is charged.
  • FIG. 15 illustrates a wireless charging system 1500 in accordance with another embodiment of the present technology.
  • the wireless charging system 1500 includes a power transmitting device/component 1501 and a power receiving device/component 1503 .
  • the power transmitting device 1501 includes a transmitter (TX) configured to transmit power waves (e.g., RF waves) or a primary coil to generate alternating magnetic fields.
  • the power receiving device 1503 includes a receiver (RX) or a secondary coil configured to receive the power waves transmitted from the transmitter or to respond to the generated magnetic fields. The RX can further use the received power to charge a battery.
  • TX transmitter
  • RX receiver
  • the RX can further use the received power to charge a battery.
  • the wireless charging system 1500 includes a pair of resonant circuits that are turned to resonate at the same resonant frequency.
  • One of the resonant circuits is positioned in the TX and the other is positioned in the RX.
  • the TX includes an oscillator to generate RF waves at a resonant frequency by the resonant circuit at the TX. The generated RF waves can then be received by the resonant circuit at the RX.
  • the RX includes a rectifier coupled to the resonant circuit at the RX. The rectifier is configured to transform the received RF waves into electrical current for charging a battery.
  • the TX and RX can have different designs or arrangements.
  • the power transmitting device 1501 can include a controller (e.g., a chip, a control logic, a processor, etc.) configured to (1) detect the existence of the power receiving device 1503 ; (2) based on the detected power receiving device 1503 , determine a suitable wireless/contactless/inductive charging protocol (e.g., “Qi” standard, “AirFuel Alliance” standard, “Magne Charge” standard, etc.) to perform a charging process; and (3) initiate the charging process based on the determined charging protocol.
  • a controller e.g., a chip, a control logic, a processor, etc.
  • a suitable wireless/contactless/inductive charging protocol e.g., “Qi” standard, “AirFuel Alliance” standard, “Magne Charge” standard, etc.
  • the controller can be further configured to (1) authenticate the hub apparatus 300 or the components therein (e.g., the power receiving device 1503 ); and (2) based on the result of the authentication, determine whether to perform a charging process.
  • the controller can be further configured to generate a signal and transmit the generated signal to a server or a user device, indicating the result of the authentication.
  • the controller can be further configured to (1) receive information (e.g., battery usage information, battery status information, etc.) stored in a battery memory attached to a battery positioned in the hub apparatus 300 ; and (2) transmit the received information to a server or a user device.
  • information e.g., battery usage information, battery status information, etc.
  • the controller can be further configured to communicate with the ECU carried by the main circuit board 203 of the hub apparatus 300 .
  • the controller can provide firmware/software updates for the components (e.g., the battery assembly 205 ) of the hub apparatus 300 .
  • the power transmitting device 1501 is positioned in the charging head 901
  • the power receiving device 1503 is positioned in the hub apparatus 300 .
  • the power receiving device 1503 can be positioned on a board (e.g., the secondary board 325 ) coupled to the side cover 321 of the hub apparatus 300 .
  • the side cover 321 is made of a material (e.g., plastic) that does not substantially interfere with transmissions between the power transmitting device 1501 and the power receiving device 1503 .
  • the charging head 901 can include a housing that is made of a material (e.g., plastic, resin, etc.) that does not substantially interfere with the transmission between the power transmitting device 1501 and the power receiving device 1503 .
  • the side cover 321 enables signal transmission/communication by a Wi-fi and/or Bluetooth module, which are coupled to, or carried by, the side cover 321 for communicating with an external device.
  • the power transmitting device 1501 can be positioned on a surface of the charging head 901 , at other locations such as inside the vertical portion 1207 or the hollow arm 1209 of the charging stand 1201 .
  • the power receiving device 1503 can be positioned on a surface of the hub apparatus 300 , incorporated in the housing assembly 301 of the hub apparatus 300 , or other suitable locations.
  • FIG. 16 is an isometric view of an embodiment of the power transmitting device 1501 .
  • the power transmitting device 1501 has a flat structure and is configured to be positioned adjacent to the secondary board 325 (e.g., where the power receiving device 1503 is located, in some embodiments) of the hub apparatus 300 .
  • the power transmitting device 1501 can be shaped in accordance with the secondary board 325 .
  • the power transmitting device 1501 has a partially-circular-shaped flat structure.
  • the power transmitting device 1501 can have a crescent-shaped flat structure.
  • the power receiving component 1503 can be positioned on or carried by the secondary board 325 .
  • FIG. 17 is a schematic diagram showing the power receiving device 1503 in accordance with embodiments of the present technology.
  • the power receiving device 1503 is positioned on a lower portion of the secondary board 325 .
  • the power receiving device 1503 can be positioned at another portion (e.g., upper or side) of the secondary board 325 .
  • the secondary board 325 is formed with an opening 2031 to allow a shaft (e.g., the shaft 309 ) to pass.
  • the power receiving device 1503 can be formed with a shape corresponding to the opening 2031 .
  • the power receiving device 1503 can be formed with a shape corresponding to the secondary board 325 .
  • the power receiving device 1503 can be formed with a shape corresponding to the power transmitting device 1501 .
  • FIG. 18 is a schematic, cross-sectional view showing the power transmitting component 1501 and the power receiving device 1503 in accordance with embodiments of the present technology. As shown, the power transmitting component 1501 and the power receiving device 1503 are generally positioned in parallel to each other. In some embodiments, the power transmitting component 1501 and the power receiving device 1503 can be positioned to form an angle.
  • Advantages of the present wireless and wired chargers include, for example, (1) enabling a user to select a convenient way to charge, either by a wired charger or a wireless charger; and (2) providing chargers ready to use without opening or adjusting the hub apparatus (such that the hub apparatus can still be watertight, waterproof, airtight, etc. during and after charging).
  • FIG. 19 illustrates connectors 1901 a - d in accordance with an embodiment of the present technology.
  • the connectors 1901 a - d include contact portions 1937 a - d and terminal ends (e.g., wires) 1933 a - d , respectively.
  • the terminal ends 1933 a - d are coupled to a battery assembly (e.g., element 205 ) or a controller carried by a main circuit board (e.g., element 203 ) of a hub apparatus (e.g., element 100 , 200 , or 300 ).
  • the terminal ends 1933 a , 1933 d are coupled to the battery assembly
  • the terminal ends 1933 b , 1933 c are coupled to the controller (for testing, information exchanging, etc.).
  • one or more of the contact portions 1937 a - d can be a spring contact configured to electrically couple to a corresponding contact point.
  • the spring contact can be shaped to provide a resilient force made for facilitating the electrical connection.
  • the contact portion 1937 a is formed with a female positioning structure (or a recess) 1903 a configured to receive a male positioning structure (e.g., a protrusion) of a charging head ( FIG. 21 ).
  • the contact portion 1937 d is also formed with a female positioning structure (or a recess) 1903 d configured to receive a male positioning structure (e.g., a protrusion) of the charging head.
  • the male/female positioning structures are configured to facilitate the connection between the contact portions 1937 a , 1937 d and the charging head ( FIG. 21 ).
  • FIG. 20 illustrates a side cover 321 in accordance with embodiments of the present technology.
  • the side cover 321 includes a base portion 333 and a mating portion 335 extending from the base portion 333 .
  • the mating portion 335 is formed with an opening that enables the contact portion 1937 a to pass such that it can be coupled with the corresponding contacting point 2103 a.
  • a charging head 2101 is formed with four contacting points 2103 a - d configured to couple with the contact portions 1937 a - d , respectively.
  • the contacting points 2103 a , 2103 d are formed with male positioning structures (or protrusions) 2105 a , 2105 b .
  • the male positioning structures 2105 a , 2105 b are configured to be received/positioned in the female positioning structures 1903 a , 1903 d , respectively, such that the charging connectors 1901 a , 1901 d are fittingly, fixedly coupled to the contacting points 2103 a , 2103 d.
  • the contacting points 2103 b , 2103 c can also be formed with male positioning structures (or protrusions) 2105 b , 2105 c configured to contact the contact portions 1937 b , 1937 c .
  • the male positioning structures 2105 b , 2105 c can ensure that the contacting points 2103 b , 2103 c are properly in contact with the contact portions 1937 b , 1937 c.
US16/207,058 2017-12-01 2018-11-30 Hub apparatus and associated charging apparatus and systems Active 2039-06-22 US10981624B2 (en)

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